phasing is just when you have two sounds (mostly kicks in techno) that are at the same frequency almost cancelling each other out.........gets a bit annoying on a big system which is what eq is for!! personally I always have one tune with the bass very low or switched off and the main track I'm focussing on turned up then and when it's time to switch tracks just swap these settings over....

and yeah I agree a lot of the raw releases sounds phasey and almost too compressed